baber/WOPTO huggingface dataset:
Patent GB-1133344-A (GB)
Title: Semiconductor device particularly a transistor device
IPC: H01L21/22
Filed: 1965-11-10
Abstract: 1,133,344. Transistors. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 10 Nov., 1965 [19 Dec., 1964], No. 47673/65. Heading H1K. In a transistor the base zone, which is entirely monocrystalline, is insulated from the collector zone except at the active interface between them by a layer of insulating material embedded in the semi-conductor body. A typical transistor, Fig. lc, is formed by diffusing boron through oxide masking into the periphery of one face of an N-type silicon wafer, then diffusing to form a P-type layer 5 over that entire face and covering it first with oxide and then with polycrystalline semi-conductor. Material is then removed from the opposite face down to the diffused peripheral region 3. Alternatively after removing a certain amount of material acceptor impurity is diffused into the opposite face to link up with this region. Next an apertured oxide layer 8 is formed on this face and strongly N-doped polycrystalline semi-conductor 9 deposited over it to produce a diffused N-type collector contact region 10. The polycrystalline layer on the one face is then etched away, an emitter junction 12 formed by diffusing phosphorus through a hole etched in oxide layer 6 and base contacts made through apertures 14. In an alternative method base region 5 is formed by masked diffusion immediately before the emitter. Another process is similar except that the formation of the peripheral N-type region is omitted. In a modification of this process the base region is restricted to part of one face by masking during diffusion and the collector formed in two parts facing opposite edges of the emitter junction (Fig. 3, not shown). In this embodiment the base contacts may be disposed in recesses in the base region to reduce the base resistance. The transistor may be formed as part of a solid circuit by performing the initial processing steps in a repeating pattern on one face of the wafer and then dividing the wafer into isolated elements by the removal of material from the opposite face. The individual collectors are formed as before, after which the N-type polycrystalline layer is reduced to islands surrounding the isolated elements, its surface oxidized, and a further continuous polycrystalline layer deposited over the elements. The individual transistors (Fig. 5, not shown) are then completed as before.
Patent GB-1079179-A (GB)
Title: Electrical-contact assemblies
Inventor: WHITE LAWRENCE GEORGE
IPC: H01H1/26
Filed: 1963-12-03
Abstract: 1,079,179. Mechanical interrupters. HAWKER SIDDELEY DYNAMICS Ltd. Nov. 25, 1964 [Dec. 3, 1963], No. 47706/63. Heading H2B. To prevent accidental operation of a spring contact set 9, 10 due to vibration, an operating cam 3 is provided which comprises two face cams 4, 5 mounted on a common shaft 2 and between which the contact blades 9, 10 extend. Bearings 16, 17 on the blades 9, 10 bear against the cam surfaces 4, 5 respectively so that the contacts 14, 15 are normally held in engagement. On rotation of the cams 4, 5 by a step-by-step motor the bearings enter one or other of the pairs of recesses (6) (7) (Fig. 4, not shown) in the cam surfaces and the contacts 14, 15 open under their own resilience. A rib may be provided between each pair of recesses (6) (7) of the cam to co-operate with inwardly directed bearings on the contact blades and so hold the contacts 14, 15 open more positively. When the contacts are held closed the effective stiffness of each blade is increased by bracing members 11, 12 which terminate close to the contacts. When the contacts are open they are more resilient and move about their clamped ends. The cam surfaces are coated with P.T.F.E.
Patent GB-1139270-A (GB)
Title: Improvements in or relating to processes for the detection and evaluation of randomly-occurring electric signal pulses
IPC: H04M15/18
Filed: 1967-10-20
Abstract: 1,139,270. Automatic exchange systems. SIEMENS A.G. 20 Oct., 1967 [21 Oct., 1966], No. 47804/67. Heading H4K. Metering pulses subject to distortion on lines 11 to xy are gated to individually associated storage cores K11-Kxy by sampling pulses e (Figs. 1 and 2), these cores being interrogated by doublet pulses a, b occurring just before and just after each alternate sampling pulse e. The results of the a and b interrogations are registered separately on registers E1 and E2 for groups of lines in parallel, the registers being read out serially to produce coincident outputs a1 a2, corresponding to an a, b, interrogation for each line. The outputs al, a2, are put in a store SP by way of leads e1, e2, and are returned one scanning cycle later as signals m1 m2, for comparison with the current a1, a2, signals. The signals m1, m2, al, a2, are operated on by gates S1 and S2 so that if in the order given they exhibit the binary code 011 in the first or last three bit positions then a signal ad is generated to instruct the common metering store to add one to the corresponding subscriber's cumulative meter pulse store. An alternative process of judging the results of interrogation is illustrated in Fig. 3 where the. al, a2 signals produce a signal el for storage and production one scanning cycle later as m1 only if both a1 and a2 are binary ones. If al and a2 are binary ones and the preceeding signals al, a2, were not, i.e. m1 does not exist, then a signal ad to the common meter store is produced. The alternative process requires a faster sampling pulse rate relative to the meter pulse length than is required for the circuit shown in Fig. 1. To eliminate negative impulse interfering voltage on the metering lines diodes D11-Dxy are provided. The decision as to the presence of a pulse may be based on more than two consecutive doublet interrogations
Patent GB-1444619-A (GB)
Title: Thiophosphate esters having pesticidal properties
IPC: C07F9/58
Filed: 1973-10-12
Abstract: 1444619 Thiophosphate esters CIBA-GEIGY AG 12 Oct 1973 [13 Oct 1972 24 Aug 1973] 47855/73 Heading C2P Novel thiophosphate esters of the formula wherein R 1  is n-propyl, isobutyl, sec-butyl or n-pentyl, R 2  is H, Cl, Br, CN, NO 2 , (C 1 -C 4  alkoxy)carbonyl, or mono- or di-(C 1 -C 4  alkyl)- carbamoyl, R 3  is H, Cl, Br or methyl and X is O or S are obtained by the following methods A, B and C wherein Hal is Cl, Br, F or I and Me is a monovalent metal, e.g. Na or K. The products have pesticidal properties and may be used as active ingredients in conventional pesticidal formulations, which may also contain other insecticides and/or acaricides, e.g. other organic phosphorus compounds, nitrophenols and derivatives thereof, formamidines, ureas, carbamates and chlorinated hydrocarbons.
Patent GB-973958-A (GB)
Title: Polyurethanes prepared from polymeric materials containing hydroxyl groups,and the preparation of said polyurethanes
Inventor: HASSALL JOHN DAVID
IPC: C08G18/48
Filed: 1962-12-19
Abstract: Polyethers, containing free hydroxyl groups, used to prepare polyurethane, polythiourethanes and their corresponding foams, are prepared by reacting a nucleating agent under adduct-forming conditions with an epoxy reactant comprising an hydroxy epoxide and either an epoxy hydrocarbon or a halo-epoxide or both. The nucleating agents are defined as compounds containing at least two active hydrogen atoms per molecule and include alcohols e.g. monopropylene glycol, dipropylene glycol, styrene glycol, glycerol, pentaerythritol and sorbitol; amines e.g. ethylene diamine and diethylene triamine; urea, amino-alcohols e.g. monoethanolamine and diethanolamine, phenols e.g. resorcinol and phloroglucinol; water and phosphoric acid.  The hydroxy epoxides, used in admixture with the haloepoxides e.g. epichlorohydrin and 1, 2-epoxy-2-methyl-4 chlorobutane, and/or epoxy hydrocarbons, include glycidol, 1, 2-epoxy-2-methylpropan-3-ol; 1, 2-epoxy-2-methylbutan-4-ol; 1, 2-epoxy-3-methylbutan-4-ol, and 1, 2-epoxy-2-hydroxymethylbutane. The epoxy hydrocarbons have the general formula <FORM:0973958/C3/1> wherein R1, R2, R3, and R4, which may be the same or different, are hydrogen, alkyl, aryl or aralkyl, e.g. 2 butene oxide and isopropylethylene oxide.  The different epoxy compounds may be added in any desired order to the reaction mixture. The reaction takes place in presence of BF3 when the epoxy reactant comprises a haloepoxide and in presence of a basic catalyst e.g. sodium, potassium metals, alloys, hydrides and hydroxides when an epoxy hydrocarbon is used. Examples 1 and 2 describe the preparation of polymers having 6 to 20 free hydroxy groups per molecule and molecular weights of 6390, 8520 and 18600 from dipropylene glycol, glycidol and propylene oxide and Example 3 describes the preparation of a polyurethane foam by reacting the product of Example 1 with toluene diisocyanate in presence of triethylene diamine, water and a silicone oil.
Patent GB-488100-A (GB)
Abstract: 488,100. Calculating - machines. HUNTER, H., HUNTER, C. E., and CAMPOS, F. Dec. 30, 1936, No. 35730. [Class 106 (i)] In a machine with account storing devices of the type described in Specification 481,965 the mechanism for controlling the timing of the engagement of the storing devices with their operating members is associated with means for effecting the disengagement of the said devices and members while the elements of the selected storing device are at zero position. As shown in the Figure, when it is desired to take a subtotal of a previouslyselected account, an operating handle 1 is rocked anticlockwise and a cam 3 swings an arm 4, 6 anticlockwise about a pivot 5, the arm being held at the limit of its movement by a latch 15 engaging a pin 27 on the arm 4. The arm 4, 6 is connected by flexible cables attached at points 8, 9 to means which release the nought latches in the adding machine and which position the vertically movable stops (described in the prior Specification) above the steps on the balance slides so that, when the stops descend, the amount standing on the balance slides, i.e. the balance of the previously-selected account, is transmitted to the calculating-machine. A pawl 28 pivoted to the cam 3 rocks a crank 30 to start the calculating-machine motor to effect the transmission. A spring 13 and dashpot 32 are connected between the end 7 of the lever 4, 6 and the end 10b of another lever 10, 14 pivoted at 5 and held at this time by a latch 23 engaging a pin 26. When the operating handle 1 and cam 3 are returned, a trip pawl 19 pivoted at 17 to the cam 3 engages a stud 21 and then swings into position to trip the latch 15, the spring 13 then returning the lever 4, 6. When it is desired to take a total of a previouslyselected account, the handle 1 is rocked anticlockwise and the amount transmitted to the calculating-machine as previously described. A slide 22 carrying the stud 21 is then manually moved downwards. The handle is next returned clockwise but the stud 21 does not now engage the pawl 19. The latch 15 is thus not released but the latch 23 is tripped by the end 18 of the pawl 19, the spring 13 then rocking the arm 10b, 14 anticlockwise to lift a link (not shown) which disconnects the racks of the selected storer from the balance plates. Springs connected to the balance plates return them to zero. As the arm 10b, 14, completes its anticlockwise movement a cam part 14a releases the latch 15, a spring (not shown) then returning the arm 10b, 14 and (through the spring 13) the arm 4, 6 to the normal positions shown. Specification 394,690 also is referred to.
Patent GB-1150494-A (GB)
Title: Method for producing High Density Tungsten Ingots
IPC: C22C1/04
Filed: 1967-10-26
Abstract: 1,150,494. Hot pressed tungsten bodies. UNITED STATES ATOMIC ENERGY COMMISSION. Oct. 26, 1967 [March 13, 1967], No. 48844/67. Heading C7D. Hot pressed W ingots having a density greater than 98% theoretical are produced by compacting degassed green compacts to at least 1 kilobar and heating to 900‹ -1400‹C. while maintaining the pressure, and then reducing the temperature and pressure at such a rate that the pressure is reduced to atmospheric prior to the temperature reaching 700‹C. For compacting pressures of 2-15 kilobars the pressure is reduced at a rate of 1000 p.s.i/sec. and for pressures of 15-50 kilobars the rate is more than 10<SP>4</SP> p.s.i/sec. A conventional piston cylinder compaction apparatus Fig. 5 (not shown) is used for pressures of 2-15 kilobars and a belt type high pressure apparatus Fig. 4 is used for pressures of 15-50 kilobars. The W metal powder is first pressed at 100, 000-150, 000 p.s.i, degassed at 200‹C. in vacuum and then pre-sintered at 900‹C. in H2. After machining to size the compact is enclosed in a Mo container, vacuum degassed at 500‹C. and hermetically sealed under vacuum. The sealed compact 13 is then placed in compression chamber 10 which is laterally circumscribed by steel belt 11, steel pistons 12 projecting into the central opening. Graphite furnace 16 surrounds the compact which is insulated by jacket 17 of boron nitride. Compaction is effected by placing the assembly in a press.
Patent GB-1481523-A (GB)
Title: Punching apparatus
IPC: B26F1/02
Filed: 1974-11-13
Abstract: 1481523 Punching apparatus MEAD CORP 13 Nov 1974 [14 Nov 1973] 49193/74 Heading B4B Apparatus 22 for punching, e.g. a plurality of openings along one edge of a book comprises a plurality of stacked die plates 52 spaced apart to provide gaps into which separated portions or lifts 50 of the book edge can be received, means 70, 72, 88, Fig. 8, for removing the die plates toward each other to clamp the separated edge portions, and a plurality of punches 121, 136 adapted to be moved by drive means 74 through aligned apertures in the die plates in order to punch the openings in the clamped edge portions of the book. The die plates 52 are mounted between a block 64 and a punch guide plate 88, the ends of the die plates engaging with corresponding steps on blocks 178, Fig. 10, so as to determine the spacing between the plates; the ends of the plate are urged against the steps by spring-loaded pins 164, 176. The punch guide plate 88 is connected to piston-andcylinder devices 70, 72 which move the plate against the die plates to effect clamping. The punches 121, are located in slots 118, Fig. 11, formed in a holder 110 and the punches 136 are clamped in the latter by a plate 130; the punches may be hollow so that compressed air can be used to blow out the waste paper. The holder is connected to piston-and-cylinder devices 74 and to a linkage means 153, 160, 163 which maintains the punches in correct alignment during a punching stroke. In operation the books 10 are fed by a conveyer 20 toward the punching apparatus 22. As a book approaches the unit its leading edge is engaged by successive knife edges (34) Fig. 4 (not shown) which separate the stack of sheets of the book into discrete sections or lifts, the sections being guided by guides (42, 44, 46, 48) to the spaces between the die plates 52 up to an adjustable eccentric stop pin (184) Fig. 12. In response to a signal from a photo-electric cell, the conveyer is stopped and the piston-and-cylinder devices 70, 72 and 74 are actuated successively to clamp and punch the separated sections of book.
Patent GB-1405946-A (GB)
Title: Prefabricated structural unit and method of producing structures
IPC: E02D27/20
Filed: 1972-10-25
Abstract: 1405946 Subaqueous foundations LUDWIG VOSS HOCH-UND TIEFBAU 25 Oct 1972 [30 Nov 1971] 49316/72 Heading E1H A structural unit 1 for forming subaqueous foundations is provided with a plurality of apertures to guide anchoring means 7 in the form of piles, and to cooperate with a plurality e.g. four, guide piles 9 pre-driven in the subaqueous bed to locate the unit 1. The apertures having the anchoring means 7 are closed at their lower ends by piercable membranes, and the piles 7 located in the apertures during manufacture, the unit 1 being floated into position and then sunk into place on the predriven piles 9.
Patent GB-1148114-A (GB)
Title: Durometer
IPC: G01N3/40
Filed: 1966-11-04
Abstract: 1,148,114. Testing hardness of materials. UNIROYAL Inc. Nov.4, 1966 [Dec.2, 1965], No.49541/66. Heading G1S. An instrument for measuring the hardness of rubber comprises a durometer 10 having a presser foot 11 for penetrating the surface of a test specimen 43 and means 14 for measuring the depth of said penetration, means 17, 18, 19, 22 for supporting the durometer for vertical movement relative to a fixed base 20 and toward and away from said specimen, co-operating cam 28 and cam follower 24 one of which is rotatably mounted on the base 20 and supporting the whole of the dead weight of the durometer and supported means, and means 34 in the form of a motor for rotating the cam 28 which is effective to move the supporting means relative to the base and thus to move said durometer. The durometer is mounted for movement up and down column 19, the anvil 21 extending from the base of the column. A stabilizing arm 22 is secured to a bracket 18 on the durometer assembly the cam follower 24 being mounted on the underside of said arm. The cam 28 is provided with three lobes on its circumferential surface which move the durometer towards and away from the test piece three times for each revolution of the cam, one of the lobes being larger to allow time for the test piece to be placed on the anvil. Three readings are therefore obtained for each test piece from which an average reading can be calculated. The durometer is restricted to vertical movement by a guide 39 in which stabilizing arm 22 slides.
Patent GB-1061691-A (GB)
Title: Apparatus for baling straw,hay or the like
IPC: A01F15/14
Filed: 1963-12-16
Abstract: 1,061,691. Baling machines. MASCHINENFABRIK FAHR A.G. Dec. 16, 1963 [Dec. 27, 1962], No. 49559/63. Heading B5F. In a hay baler or the like, a bale tying needle 8, carried by a support member 7 pivoted at 9, is reciprocated through the bale chamber 19 by means of a crank-operated driving-rod 5 acting through a plate 6 attached to said member 7. In the event of the driving-rod fracturing the needle moves under the influence of gravity to the withdrawn position shown in the Figure and is retained therein by a roller 13 which engages the curved surface 18 of a cam 10 carried by member 7. The roller is carried by a lever 11 which is pivoted at 12, and is forced against the cam surface by a spring 15 attached to the free end of the lever.
Patent GB-1415007-A (GB)
Title: Railway vehicle bogie
IPC: B61C15/04
Filed: 1972-10-30
Abstract: 1415007 Rail vehicle bogie mounting inductors CREUSOT-LOIRE 30 Oct 1972 [12 Nov 1971] 49875/72 Heading B7L [Also in Division F2] A rail vehicle bogie mounts on each side thereof an inductor 1 for use in braking and/or driving the bogie, each inductor being in the plane of the bogie wheel and connected by its ends to a beam 2, in the vertical plane through the axle boxes, by pins 3 passing therethrough and having fingers 4 at their ends connected by links 7 to the bogie frame, the ends of the beam being guided in stirrups 12 below the axles boxes, the stirrups centering and supporting the beam when the inductor is in a lower operative position controlled by jacks 8. The stirrups contain wedges to ensure correct clearance between the inductor and a running rail by taking into account wheel wear. In a modification the beam and inductor are formed as one.
Patent GB-1133988-A (GB)
Title: Plunger for cartridge-containers
IPC: B05C17/005
Filed: 1965-11-24
Abstract: 1,133,988. Piston extrusion apparatus. GENERAL ELECTRIC CO. Nov. 24, 1965 [Dec. 21, 1964], No.49999/65. Heading F1R. [Also in Division F2] The piston for an extrusion gun cartridge is resilient and has a tapered cartridge wall engaging portion 13 terminating in a lip 14, a dome shaped head portion 16 being joined to the portion 13 by a resilient portion 18. The central portion of the dome 16 is supported by an annular rib 17. The arrangement is such that force on the portion by an actuating plate 27 or fluid-pressure bulges the dome outwardly, to cause the lip 14 to engage the cartridge wall and to force the cartridge contents from the nozzle 11. When the force is relieved the dome returns to the usual position and pressure in the cartridge is relieved.
Patent GB-1195696-A (GB)
Title: Improvements in or relating to Hot Water Boilers
Inventor: SALT HARRY VINCENT
IPC: F24B1/183
Filed: 1966-11-09
Abstract: 1,195,696. Boilers. H. V. SALT. 8 Nov., 1967 [9 Nov., 1966], No. 50117/66. Heading F4A. A back boiler for a firegrate comprises hollow back and side walls 4, 5, extending from top to bottom of the boiler and tapering inwardly towards their top, a hollow front wall 3 joining the side walls and extending down from the top of the boiler a shorter distance than the rear and side walls, the hollow walls providing a continuous water jacket around a flue 2 which tapers towards a top damper-controlled opening, whereby a solid fuel fire can pass under the front wall 3 and bear against the inner faces of the rear and side walls. Additional gas passages 13, 14 may be provided in the rear and side walls. In Fig. 4 (not shown) the side walls are stepped so that part 22 thereof overhangs the firebed.
Patent GB-1402030-A (GB)
Title: Process for the preparation of dimethyldecalins
IPC: C07C2/54
Filed: 1972-11-01
Abstract: 1402030 Dimethyldecalins TEIJIN Ltd 1 Nov 1972 [2 Nov 1971 8 Nov 1971] 50409/72 Heading C5E Dimethyldecalins are prepared by (a) alkylating decalin (at least partly in the cis form) with ethylene at - 50‹ to + 50‹ C. in the presence of a Friedel-Crafts catalyst and (b) isomerizing the resultant ethylated decalin at -20‹ to + 80‹ C. in the presence of a Friedel-Crafts catalyst but in the absence of ethylene. Suitable catalysts are AlCl 3 , AlBr 3 , BF 3 , SbCl 5  or a mixture of any of these with a hydrogen halide. 2,6- Dimethyldecalin may be recovered from the reaction mixture by crystallization. The starting decalin may be obtained by hydrogenating naphthalene over Pt, Pd, Ni, Ir, Ru or Rh as catalyst.
Patent GB-1473268-A (GB)
Title: Abs compositions of impact strength
IPC: C08L45/00
Filed: 1975-12-09
Abstract: 1473268 Graft polymer/synthetic petroleum resin composition DART INDUSTRIES Inc 9 Dec 1975 [3 March 1975] 50443/75 Heading C3G A thermoplastic composition comprises a blend of (A) at least one graft polymer comprising styrene and acrylonitrile graft polymerized on to a butadiene rubber backbone and (B) a synthetic hydrocarbon resin derived from a liquid fraction of a cracked petroleum stock, which synthetic resin has a ring and ball softening point of at least 70 C., wherein the weight ratio of the butadiene rubber backbone of component (A) to the synthetic resin (B) is from 1À5 : to 8 : 1. Examples are given of compositions comprising polybutadiene grafted with styrene and acrylonitrile, one of two specified types of synthetic hydrocarbon resin, antioxidant, synergist, lubricant and, optionally, a copolymer of styrene and acrylonitrile.
Patent GB-1524238-A (GB)
Title: Capping machines for threaded necks
IPC: B67B3/18
Filed: 1975-12-10
Abstract: 1524238 Roller dies EMBALLAGES COURONNE SA 10 Dec 1975 [30 April 1975] 50658/75 Heading B8T The roller, or rollers, of a capping machine for threaded necks of containers has a profile ineluding a first portion 22 complementary to the thread groove, and a second portion 24 formed by an extension constituting a cylindrical end shoulder on the lower side of the roller which prevents the edge of the cap skirt turning outwardly. A further portion 23 is preferably provided between the portions 22, 24, the portion 23 conforming to one half the profile of the thread land. The difference in diameter, (D 1 - D 2 ), between the portions 22, 24 is double the depth P of the thread. The depth of the skirt of the cap may be less than, equal to, or greater than the height of the thread on the container.
Patent GB-1426850-A (GB)
IPC: A41C3/04
Filed: 1974-11-25
Abstract: 1426850 Maternity brassiere WELFIA FOUNDATIONS Ltd 25 Nov 1974 50858/74 Heading A3V A maternity brassiere comprises cups, the upper edges of which are defined by extensible straps 17 attached to shoulder straps 12 and a band 10, and including flaps 19 detachably connected at the front of the brassiere. The flaps may be completely detachable.